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Re: [Xen-users] Xen + Nvidia drivers

To: "Waeyenbergh, Sven" <Sven.Waeyenbergh@xxxxxxxxxxxxxx>
Subject: Re: [Xen-users] Xen + Nvidia drivers
From: Anthony Liguori <aliguori@xxxxxxxxxx>
Date: Fri, 18 Nov 2005 17:36:14 -0600
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Waeyenbergh, Sven wrote:


that's weird, i did compile my own (xen 2 based) dom0 kernel from source,
then proceeded in installing the nvidia drivers (using the .sh script they 
Obviously, no pre-made kernel modules were available,
but the script was able to compile its own module (with the correct links in 
The kernel module uses a binary layer with some open source code that uses the binary layer. This allows them to not have to recompile the binary layer for every tiny driver change.

I can't say i've used the graphic features of this system much (it's my server),
but i did not hit any issues with this, works like a breeze.
It's likely that you're not actually using the module. Check lsmod and see what the ref count is.


Anthony Liguori


-----Original Message-----
From: Anthony Liguori [mailto:aliguori@xxxxxxxxxx]
Sent: 17 November 2005 20:08
To: mogensv@xxxxxxxxxxxxxxxx
Cc: bregulla; xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] Xen + Nvidia drivers

Mogens Valentin wrote:

bregulla wrote:


I try to get a Nvidia Quadro PCI-E graphics card to work with xen in Dom0 with the binary nivida-drivers. I use the xen-2.0-testing tarball with kernel 2.6.12 and the nvidia driver package NVIDIA-Linux-x86-1.0-7676-pkg1. The nvidia kernel module compiles without errors but when I try to load it segfaults.
Is it possibly because the tls-libs are disabled?
Has anyone managed to get the nvidia drivers to work with xen? Or is there a general problem with xen + nvidia?
This is a recipe for disaster. The nVidia kernel driver has a binary layer that it not Xen-ready. It's very likely that it's going to be doing something it's not supposed to do in Xen.

You're out of luck until nVidia releases a Xen driver. You can also use the Open Source driver (or even just Vesa).

This is why binary modules are so evil...


Anthony Liguori

Not sure I can help, but there's been general problems with nvidia driver for a looong time. Check the threads on nvnews.com . Many still use the old 6629 driver, though it doesn't have as many fancy features as later drivers. Then again, you may not need 8x AA and AF...

Of cause those problems are not normally related to Xen, but you may wan't to give 6629 a try.

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